DS18 has new fuse holders that you can be sure to use in almost all weather conditions, the MFH4. This weatherproof fuse holder is completely sealed from the elements. It cones with multiple fuses to fit your power requirement needs and also Allen keys to tighten them and the 4 ga terminals tightly. We also include multiple ferrules to ensure the tightest cabling. SPECIFICATIONS:s 4 AWG Waterproof Fuse Holder 1pc X Fuse Holder Includes Red Silicone Sheath (Size : OD6.5MM) 3pcs X AFS Fuse (80A x 1, 100A x 1, 150A x 1) 3pcs x Allen Key(Nickel Plating, 2mm x 1,3mm x 1, 4mm x 1) Bass Accessories, Silver plating Tubular terminal x 8:8 AWG x 4, 10 AWG x 4 Features: Water tight construction to prevent short circuits and corrosion. Included allen keys, ferrules, and allen bolts to help maintain the tightest connection. Comes with an assortment of fuses so you can pick the correct fuse based on your amp power requirements. Made of high strength plastic to give unparalleled long lasting durability. SPECIFICATIONS: SOLD AS Piece WARRANTY 1 Year Warranty UNIVERSAL Yes AAIAID FXVX YOUTUBE VIDEO https://youtu.be/DoSwCJgBNdY VEHICLE TYPE Marine BRAND DS18 UPC 810005182942 GAUGE 4 Gauge MATERIAL L Plastic DIM LENGTH 3.75 DIM WIDTH 6.25 DIM HEIGHT 1.5 DIM UNIT in WEIGHT 0.32 WEIGHT UNIT lb Installation Guide